US 2014/0192026 A1 · MULTI-TRANSDUCER WAVEGUIDE ARRAYS

Abstract

Systems and related methods providing for touch sensors having segmented reflective arrays including waveguide cores are discussed herein. A touch sensor may include a substrate configured to propagate surface acoustic waves. The substrate may include two or more segmented reflective arrays. A segmented reflective array may include a major reflective array configured to propagate surface acoustic waves and a waveguide core configured to concentrate acoustic energy of the surface acoustic waves. Two segmented reflective arrays may further include adjacent portions that define an overlap region of the substrate. In some embodiments, the segmented reflective array may further include a beam dump configured to decrease intensity of surface acoustic wave propagation past the end of the segmented reflective array.

Claims20

Dependent claims

An acoustic touch apparatus, comprising:

a substrate configured to propagate surface acoustic waves, the substrate having:
a first segmented reflective array, comprising:
a first major reflective array configured to propagate a first portion of surface acoustic waves in a first direction defining a first beginning and a first end of the first major reflective array;
and
a first waveguide core configured to concentrate acoustic energy of the first portion of surface acoustic waves;
a second segmented reflective array, comprising:
a second major reflective array configured to propagate a second portion of surface acoustic waves in a second direction defining a second beginning and a second end of the second major reflective array;
and
a second waveguide core configured to concentrate acoustic energy of the second portion of surface acoustic waves.

6 more elements

Dependencies are inferred from the claim text.

Multi-transducer waveguide arrays

Life of this patent

Multi-transducer waveguide arrays

Life of this patent

Abstract

Claims20